ACI 142962 FreezeStat 50′ Capillary Auto-Reset 2 SPDT

The ACI 142962 FreezeStat is a professional-grade freeze protection thermostat engineered for commercial and industrial HVAC air handling applications. Featuring a 50-foot averaging capillary tube, this unit continuously monitors air temperature across a wide coil or duct section, triggering a protective response the moment any point along the capillary senses a near-freezing condition — not just the average temperature.

Auto-Reset Operation

The auto-reset (A/R) design automatically returns the device to normal operation once temperatures recover above the setpoint, eliminating the need for manual intervention and reducing service calls in applications where brief cold-air intrusions are common.

Dual SPDT Switching

Equipped with two Single-Pole Double-Throw (SPDT) switching circuits, the ACI 142962 provides the flexibility to simultaneously control multiple loads — such as shutting down a supply fan while opening a heating valve — from a single device. This dual-output capability simplifies wiring and reduces the need for additional relays in freeze protection sequences.

Key Features

• 50-foot averaging capillary tube for broad coil and duct coverage
• Auto-reset operation for automatic recovery after freeze condition clears
• Dual SPDT switching contacts for multi-load control
• Responds to the coldest point along the capillary, not just average temperature
• Designed for commercial and industrial air handling unit (AHU) applications
• Helps protect heating coils, chilled water coils, and ductwork from freeze damage

Typical Applications

• Air handling units (AHUs) and rooftop units
• Makeup air units with outdoor air intake
• Fan coil units in cold climates
• Duct freeze protection in commercial buildings